Tuesday, April25, 2017 L-36.com


Marine Weather and Tides
Kittery Point, ME

Version 3.4
What's New / NOTES
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 5:42AMSunset 7:39PM Tuesday April 25, 2017 8:36 AM EDT (12:36 UTC) Moonrise 5:33AMMoonset 6:41PM Illumination 0% Phase: New Moon; Moon at 29 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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ANZ154 Coastal Waters From Cape Elizabeth, Me To Merrimack River, Ma Out 25 Nm- 817 Am Edt Tue Apr 25 2017
.small craft advisory in effect from 2 pm edt this afternoon through Wednesday afternoon...
Rest of today..NE winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft...building to 4 to 6 ft this afternoon. Rain and drizzle. Patchy fog. Vsby 1 to 3 nm.
Tonight..E winds 15 to 20 kt...diminishing to 10 to 15 kt after midnight. Gusts up to 30 kt. Seas 4 to 7 ft. Rain and drizzle. Widespread fog. Vsby 1 to 3 nm.
Wed..E winds 10 to 15 kt...becoming se 5 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 4 to 7 ft. Rain and drizzle. Patchy fog. Vsby 1 to 3 nm.
Wed night..E winds 5 to 10 kt. Seas 5 to 8 ft. Rain likely with areas of drizzle. Areas of fog in the evening. Areas of fog after midnight. Vsby 1 to 3 nm in the evening.
Thu..E winds around 5 kt. Seas 4 to 7 ft. A chance of rain with areas of drizzle. Areas of fog.
Thu night..S winds around 5 kt. Seas 4 to 6 ft.
Fri..S winds 5 to 10 kt. Seas 3 to 5 ft. A chance of showers.
Fri night..SW winds 5 to 10 kt. Seas 3 to 5 ft. A chance of showers.
Sat..SW winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers.
Sat night..W winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers.
ANZ100 817 Am Edt Tue Apr 25 2017
Synopsis for stonington me to merrimack river ma out to 25 nm.. An easterly wind will strengthen on today into tonight, and shift to the southeast on Wednesday as low pressure moves north toward the gulf of maine. Although winds diminish as the low arrives, wave heights will remain elevated through the end of the week. A cold front will cross the waters by Friday night.

7 Day Forecast for Marine Location Near Kittery Point CDP, ME
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location: 43.06, -70.7     debug


Area Discussion for - Gray/Portland, ME
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Fxus61 kgyx 251138
afdgyx
area forecast discussion
national weather service gray me
738 am edt Tue apr 25 2017

Synopsis
An onshore flow will transport cool, moist air off the gulf of
maine today into Thursday. Today drizzle and rain will begin to
overspread the region with rain becoming heavier tonight into
Wednesday as low pressure moves north along the east coast. The
cool, moist maritime air may linger into Thursday east of the
mountains, but warm air will begin to move into western new
england and eventually even make it to the maine coast this
weekend.

Near term /until 6 pm this evening/
Update...

have updated the grids for current conditions. Latest radar
imagery and surface observations indicated very light rain, with
drizzle and patchy fog has reached southern new hampshire and
portions of coastal maine, mainly over southern coastal york
county. This precipitation is entering southern portions of the
forecast area quickly this morning. Have upped pops for the next
few hours.

Interior and central/northern areas have a slightly different
airmass in place with large dew point depressions as noted by
surface observations and mesoscale models. Therefore, it will
likely take several more hours steady light precipitation to
reach areas from about augusta and points north.

Made some adjustments to cloud cover and fog locations with this
forecast update. There was some brief patchy spots with 1/4
visibility, but they have since then come up in most places.

Prev disc...

areas of maritime drizzle and fog will remain off
the coast early this morning, before coming onshore today.

Meanwhile, rain will continue to spread northward from southern
new england today as a surface area of low pressure reaches the
mid atlantic coastline. With easterly winds developing,
temperatures will be much cooler along the coastline, with only
40s for highs in most areas.

Short term /6 pm this evening through 6 pm Wednesday/
Rain will continue tonight with widespread drizzle and fog as a
deep maritime influence will overspread much of the region. Low
pressure will slowly fill as it moves up the new jersey
coastline. Nevertheless, trajectories over the open atlantic and
slow movement of the sysetm will increase the rainfall totals
over the region despite not an overly impressive dynamic
pattern.

By Wednesday, the upper level low pressure system begins to open
with time as a surface low dissipate as it approaches nantucket
island. The heaviest rain will fall in the morning, before the
precipitation begins to lighten with time.

Temperatures will struggle to climb through the 50s in most
sections with a southeast flow continuing over the region,
albiet light. Some warmer temperatures may occur in the
downslope regions of the connecticut river valley.

Qpf: rainfall totals over 1 to 2 inches are still expected over
southern areas. There may be a few local spots that exceed 2
inches of rain in any persistent periods of heavy rain, mainly
along and or near the coastline.

Long term /Wednesday night through Monday/
Low pressure drifts northeast into the gulf of maine Wednesday
night and Thursday. This will continue a persistent onshore flow
keeping low levels saturated. The stratiform rain, drizzle and
areas of fog will continue Wednesday night and by Thursday only
the drizzle and areas of morning fog should remain. Models
indicate by Thursday night the low moves far enough offshore to
allow some clearing in the mid/high levels but lack of any
ventilation of drier air in the lower levels should keep low
levels moist with stratus remaining, especially southern and
eastern areas. Temps warm aloft Friday but unfortunately the
combo of the clouds and a developing south flow will keep temps
from reaching their potential, although southern areas of nh may
reach into the 70s. A weak short wave moves through late Friday
so scattered showers and even the chance of afternoon
thunderstorms may occur.

Over the weekend a large broad bermuda high sets up off the east
coast with its northern periphery of a warm southwest flow
aloft reaching into northern new england. Models are having a
tough time trying to resolve any short waves traveling around
the outer periphery of the large high into new england. This
will make or break the weekend with either a mild nice weekend
versus a wet damp weekend. Confidence at this time is low on the
outcome.

Aviation /12z Tuesday through Saturday/
Short term...VFR conditions this evening will begin to
transition to MVFR and then ifr conditions from south to north
during the day Tuesday as low level moisture spills in off the
gulf of maine. There could be an area of lower clouds arriving
along the immediate coast as early as tonight which would bring
a threat for lifr conditions. But the broader forecast is for
worsening conditions on Tuesday with just about all areas ifr or
worse by Tuesday evening in drizzle and light rain which will
likely last through Wednesday. To the northwest of the
mountains up in whitefield, conditions may stayVFR to MVFR
until the better forcing for rain arrives Tuesday night.

Long term... Lingering ifr/lifr conditions likely through
Thursday. Improvement toVFR/MVFR likely for Thursday night
into Friday... With occasional restrictions in shra and possible
tsra possible Friday afternoon. Frontal boundary remains across
the region through the weekend withVFR likely dominating... But
scattered MVFR/ifr restrictions in shra possible.

Marine
Short term... Expect an increasing easterly flow tonight into
Tuesday, with winds as high as 25 kt beginning Tuesday
afternoon. Winds shift to the southeast on Wednesday and
decrease in intensity Wednesday night. The onshore fetch will
allow wave heights to build up to 5 to 9 ft through Wednesday
night.

Long term... While winds will subside... Lingering deep water
swells will likley necessitate scas over the outer waters into
the weekend.

Fire weather
Moist onshore flow will bring high humidity and a wetting rain
to all areas today through at least Wednesday.

Hydrology
Continued snow melt in the mountains will keep river levels
high. Rain expected this afternoon and Wednesday will add runoff
to area rivers already at high levels. While widespread
flooding is not expected, it is not out of the question that a
few rivers could reach minor flood stage.

Tides/coastal flooding
High astronomical tides begin tonight and last through the
weekend. The combination of high tides and an onshore flow with
the coastal low will bring the chance of beach erosion, splash
over, and minor coastal flooding during the time of high tide
tonight and again Wednesday night. There is relatively good
agreement between the wrmgyx forecasts and in-house matrices for
this event. Minor expects will be possible, from portland
harbor and points south.

Gyx watches/warnings/advisories
Me... None.

Nh... None.

Marine... Small craft advisory from 4 pm this afternoon to 6 pm edt
Wednesday for anz151-153.

Small craft advisory from 2 pm this afternoon to 6 pm edt
Wednesday for anz150-152-154.

Near term... Cannon
short term... Cannon
long term... Marine


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BGXN3 - Great Bay Reserve, NH 7 mi111 min NE 4.1 46°F 1027 hPa45°F
IOSN3 - Isle of Shoals, NH 8 mi96 min NE 14 G 15 45°F 1025.9 hPa (+1.7)44°F
44030 - Buoy B0102 - Western Maine Shelf 17 mi152 min NE 12 G 14 45°F 45°F2 ft1025.2 hPa
WELM1 - 8419317 - Wells, ME 19 mi78 min NE 7 G 9.9 44°F 49°F1027.4 hPa
WEXM1 - Wells Reserve, ME 21 mi96 min N 4.1 44°F 44°F
44098 - Jeffrey's Ledge, NH (160) 34 mi60 min 44°F2 ft
44029 - Buoy A0102 - Mass. Bay/Stellwagen 38 mi152 min NE 12 G 14 46°F 44°F1023.7 hPa
44007 - PORTLAND 12 NM Southeast of Portland,ME 44 mi106 min NE 14 G 16 42°F 45°F3 ft1026.7 hPa (+1.4)42°F
CASM1 - 8418150 - Portland, ME 48 mi78 min 42°F 44°F1027.6 hPa
44013 - BOSTON 16 NM East of Boston, MA 49 mi106 min ENE 12 G 14 46°F 46°F3 ft1023.8 hPa (+1.2)

Wind History for Wells, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Pease Air Force Base / Portsmouth, NH7 mi98 minENE 88.00 miLight Rain46°F43°F93%1026.4 hPa
Rochester - Skyhaven Airport, NH19 mi1.8 hrsN 61.75 miFog/Mist43°F41°F93%1025.6 hPa
Sanford, Sanford Regional Airport, ME23 mi1.7 hrsNE 69.00 miOvercast43°F42°F97%1028.1 hPa

Wind History from PSM (wind in knots)
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Last 24hrCalmNE3SE5E8E10E11SE9--E10SE9E9E7NE7NE7NE6NE5N4N3N5N6NE5N6NE8NE8
1 day agoNW6N3SW4SW3SE9SE12SE16SE13SE15SE13SE11S10S4S4S7SW5SW7SW7SW10SW4W5W3SW3Calm
2 days agoNE9NE7NE7N7N8N9N8N9N7--N6CalmN4NE3CalmCalmCalmCalmCalmCalmCalmCalmCalmNW5

Tide / Current Tables for Gerrish Island, Portsmouth Harbor, New Hampshire
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Gerrish Island
Click for Map
Tue -- 04:30 AM EDT     -0.65 feet Low Tide
Tue -- 05:32 AM EDT     Moonrise
Tue -- 05:44 AM EDT     Sunrise
Tue -- 10:45 AM EDT     9.84 feet High Tide
Tue -- 04:50 PM EDT     -0.60 feet Low Tide
Tue -- 06:40 PM EDT     Moonset
Tue -- 07:37 PM EDT     Sunset
Tue -- 11:04 PM EDT     10.46 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
8.25.93.20.8-0.5-0.50.72.95.689.59.88.96.94.31.6-0.1-0.60.32.357.89.710.5

Tide / Current Tables for Portsmouth Harbor Entrance, New Hampshire Current
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Portsmouth Harbor Entrance
Click for Map
Tue -- 12:14 AM EDT     -0.00 knots Slack
Tue -- 03:03 AM EDT     -2.20 knots Max Ebb
Tue -- 05:32 AM EDT     Moonrise
Tue -- 05:44 AM EDT     Sunrise
Tue -- 06:53 AM EDT     0.00 knots Slack
Tue -- 08:56 AM EDT     1.49 knots Max Flood
Tue -- 12:32 PM EDT     -0.00 knots Slack
Tue -- 03:24 PM EDT     -2.24 knots Max Ebb
Tue -- 06:40 PM EDT     Moonset
Tue -- 07:07 PM EDT     0.00 knots Slack
Tue -- 07:37 PM EDT     Sunset
Tue -- 09:20 PM EDT     1.74 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.2-0.8-1.8-2.2-2-1.5-0.90.11.11.51.20.80.4-0.4-1.5-2.2-2.1-1.7-1.1-0.111.71.61.1

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Northeast    EDIT
Geos

Wind Forecast for Gray/Portland, ME (8,2,3,4)
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Ground Weather Radar Station Portland, ME
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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.